1. Department of Photonics, National Cheng Kung University, Tainan 70101, Taiwan
2. Advanced Optoelectronic Technology Center, Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 70101, Taiwan
3. Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 10617, Taiwan
4. Department of Electrical Engineering, Southern Taiwan University of Science and Technology, Tainan 710, Taiwan
5. Institute of Lighting and Energy Photonics, College of Photonics National Chiao Tung University, Tainan 71150, Taiwan